Spiral drill INOX dia. 3.8 mm HSS-E Co5 N DIN 338 135 for tough and hard materials Angle135 Diameter3.8 mm Flute length43 mm Length, total75 mm RPM from, grey cast iron, white cast iron838 RPM RPM from, hard non-ferrous metals2095 RPM RPM from, rust and acid-resistant steels838 RPM RPM from, soft non-ferrous metals2514 RPM RPM from, steels over 700 N/mm1676 RPM RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP) 1257 RPM RPM to, grey cast iron, white cast iron2095 RPM RPM to, hard non-ferrous metals4190 RPM RPM to, rust and acid-resistant steels1676 RPM RPM to, soft non-ferrous metals5028 RPM RPM to, steels over 700 N/mm2095 RPM RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP) 3352 RPM Spiral angle, from36 VersionINOX Drilling tools with cross grinding for industrial uses. Fully ground, right-hand turning versions that produce precise drill holes thanks to their high concentricity and exact centring. PFERD offers spiral drills in the STEEL (118 point angle)